Try to deploy latest if the circle build matches latest tag

Signed-off-by: Adam Hill <adam@diginc.us>

circle-deploy.sh

@@ -37,13 +37,15 @@ if [[ "$CIRCLE_PR_NUMBER" == "" ]]; then
         images+=($arch_image)
     done
 
-    docker manifest create $MULTIARCH_IMAGE ${images[*]}
+    for docker_tag in $MULTIARCH_IMAGE $LATEST_IMAGE; do
-    for arch in *; do
+        docker manifest create $docker_tag ${images[*]}
-        arch_image=$(cat $arch)
+        for arch in *; do
-        docker pull $arch_image
+            arch_image=$(cat $arch)
-        annotate "$MULTIARCH_IMAGE" "$arch_image" "$arch"
+            docker pull $arch_image
-    done
+            annotate "$docker_tag" "$arch_image" "$arch"
+        done
 
-    docker manifest inspect "$MULTIARCH_IMAGE"
+        docker manifest inspect "$docker_tag"
-    docker manifest push "$MULTIARCH_IMAGE"
+        docker manifest push "$docker_tag"
+    done;
 fi

circle-vars.sh

@@ -32,6 +32,15 @@ if [[ -n "$DOCKER_TAG" ]]; then
     # latest- sometimes has a trailing slash, remove it
     ARCH_IMAGE="${ARCH_IMAGE/%-/}"
 fi
+
+if ! latesttag=$(curl -sI https://github.com/pi-hole/docker-pi-hole/releases/latest | grep --color=never -i Location | awk -F / '{print $NF}' | tr -d '[:cntrl:]'); then
+    print "  Failed to retrieve latest docker-pi-hole release metadata" "${CROSS}"
+else
+    if [[ "$DOCKER_TAG" == "$latest_tag" ]] ; then
+        LATEST_IMAGE="$BASE_IMAGE:latest"
+    fi
+fi
+
 MULTIARCH_IMAGE="$BASE_IMAGE:$DOCKER_TAG"
 
 set +a